豫北林州地区鼓山阶底部碳同位素组成及演化趋势

陈泳霖; 王玺; 王艳慧; 姚帅; 白国典; 方怀宾

doi:10.19509/j.cnki.dzkq.2022.0196

豫北林州地区鼓山阶底部碳同位素组成及演化趋势

doi: 10.19509/j.cnki.dzkq.2022.0196

陈泳霖^{1, 2,},
王玺¹,
王艳慧¹,
姚帅¹,
白国典¹,
方怀宾¹

1.
河南省地质调查院，郑州 450001
2.
河南省金属矿产成矿地质过程与资源利用重点实验室, 郑州 450001

基金项目:

河南省自然科学基金项目 202300410024

河南省地质调查院科技创新基金项目豫科创[2021]KC-01

详细信息

作者简介:
陈泳霖(1988—)，男，工程师，主要从事古生物学与地层学研究工作。E-mail: 153354533@qq.com

中图分类号: P597
计量
- 文章访问数: 406
- PDF下载量: 20
- 被引次数: 0
出版历程
- 收稿日期: 2022-03-08
- 网络出版日期: 2022-11-10

Carbon isotope composition and its evolution around the base of the Drumian Stage in Linzhou area, northern Henan

1.
Henan Institute of Geological Survey, Zhengzhou 450001, China
2.
Key Laboratory of Metallogenic Geological Process and Resource Utilization of Metal Mineral Resources of Henan Province, Zhengzhou 450001, China

摘要

摘要:
碳同位素地层学是寒武系地层划分与对比的重要手段。通过对豫北驴驮沟剖面碳酸盐岩地层进行碳同位素分析发现，驴驮沟剖面寒武系鼓山阶(Drumian)底界附近的碳酸盐岩的δ¹³C值分布于3.1‰~-1.7‰之间，δ¹⁸O值分布于-3.9‰~-9.4‰之间。δ¹³C、δ¹⁸O之前的非协变关系指示碳同位素组成比较稳定。鼓山阶底界附近δ¹³C表现为负漂移演化趋势，漂移幅度为3.0‰，最低值为-1.7‰，出现在三叶虫Proasaphiscus首现位置15 m之下。出现负漂移的位置和负漂移的幅度与华南湘西王村剖面、美国犹他州Drum Mountains等剖面的鼓山阶底部的负漂Drum carbon isotope excursion(DICE)一致，表明DICE负漂移具有洲际对比意义，可作为寒武系鼓山阶划分和对比的工具。负漂移峰值处岩性为位于青灰色页岩之间的薄层灰岩夹层，超覆于鲕粒灰岩之上，因此，寒武系鼓山阶底部附近的DICE负漂移对应于苗岭世早期的海侵时期。
- 碳同位素组成 /
- DICE负漂移 /
- 鼓山阶 /
- 寒武系
Abstract:
Carbon isotope stratigraphy is an important means to subdivide and correlate the Cambrian strata. Based on the carbon isotope analysis of the carbonate strata of Lütuogou Section, northern Henan Province, it is found theδ¹³C value of carbonate samples collected from the base of the Drumian Stage at Lütuogou Section, northern Henan, ranges from 3.1‰ to -1.7‰, and theδ¹⁸O value ranges from -3.9‰ to -9.4‰. No covariance exists betweenδ¹³C andδ¹⁸O, which implies that the carbon isotope composition is nearly stable. Value ofδ¹³C around the base of the Drumian Stage consists of a negative excursion, the amplitude of the negative excursion is 3.0‰, and the minimum value ofδ¹³C is -1.7‰, which occurs at the place 15 m below the first occurrence of trilobite protasaphiscus. The position and amplitude of the negative excursion are similar to those of the drum carbon isotope excursion (DICE) tested in the Wangcun Section, western Hunan, South China, and the Drum Mountains section in Utah, USA, which suggests that the DICE can be used as a global indicator for the correlation of the Drumian Stage. Furthermore, the cyan shale with thin limestone at the position of minimumδ¹³C overlies the oolitic limestone; therefore, DICE occurs in the transgressive succession in the early Miaolingian.
- carbon isotope composition /
- DICE negative excursion /
- Drumian Stage /
- Cambrian

HTML全文

图 1 剖面位置及苗岭世区域古地理图^[15]

Figure 1. Location of section and reginal paleogeographical map during Miaolingian

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图 2 工作区地质简图

Figure 2. Generalized geological map of the working

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图 3 林州地区张夏组岩性特征

a.叠层石灰岩；b.张夏组底部灰黄色薄板状泥晶灰岩夹粉砂质泥岩；c.张夏组上部软沉积变形构造；d.浅灰色砂屑灰岩中的交错层理；e.鲕粒灰岩外貌；f.鲕粒灰岩镜下特征；g.藻灰岩；h.重结晶鲕粒灰岩；i.含生物碎屑砾屑灰岩

Figure 3. Lithology characteristics of the Zhangxia Formation in Linzhou area

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图 4 驴驮沟剖面δ¹³C与δ¹⁸O之间的相关性

Figure 4. Correlativity between δ¹³C and δ¹⁸O from Lütuogou section

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图 5 驴驮沟剖面寒武系鼓山阶底界附近碳同位素组成演化趋势

Figure 5. Evolution trend of carbon isotope composition around the base of Cambrian Drumian Stage in Lütuogou section

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图 6 驴驮沟剖面寒武系鼓山阶底界碳同位素演化曲线与世界其他地区对比

Figure 6. Comparison of carbon isotope evolution curves around the base of Cambrian Drumian Stage in Lütuogou section and other regions of the world

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图 7 鼓山阶底部层序地层与化学地层对比

1.泥质白云岩；2.泥质条带灰岩；3.鲕粒灰岩；4.泥岩；5.页岩；6.平行层理；7.水平层理；8.主要硬底；9.层序边界；10.向上变深趋势

Figure 7. Correlation of sequence stratigraphy and chemostratigraphy around the base of Drumian Stage

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表 1 华北中寒武统与国际寒武系苗岭统地层对比^[19-20]

Table 1. Stratigraphic correlation between the Middle Cambrian in North China and the international Cambrian Miaolingian

国际寒武系			华北寒武系
统	阶	三叶虫带	三叶虫带	阶	统
苗岭统			Damesellaparonai	张夏阶	中寒武统
	鼓山阶	Lejopyge armata	Damesellaparonai
			Liaopeishania
			Taitzuia-Poshania
		Goniagnostus nathorsti	Amphoton
		Ptychagnostus punctuosus	Crepicephalina
		Ptychagnostus punctuosus	Megagraulos
		Ptychagnostus atavus	Inouyella-Peishania
	乌溜阶	Ptychagnostus gibbus	Bailiella-Lioparia Poriagroulos Inouyops Metagraulos Sunaspis-Sunaspidella Sinopagetia jinnanensis Ruichengaspis Asteromajia hsuchuangensis	徐庄阶
		Peronopsis taijiangensis
		Oryctocephalus indicus

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表 2 驴驮沟剖面碳酸盐岩碳氧同位素分析结果

Table 2. Carbon and oxygen isotope analysis results of carbonate rock in Lütuogou section

样品编号	δ¹³C_VPBD/‰	δ¹⁸O_VPBD/‰	距底位置/m	岩性
LZ043	0.7	-4.4	400.6	砂屑砾屑灰岩
LZ042	0.5	-5.9	392.1	叠层石灰岩
LZ041	0.4	-5.7	388.8	鲕粒灰岩
LZ040	1.3	-3.3	383.3	白云质灰岩
LZ039	1.3	-2.6	367.3	灰质白云岩
LZ038	0.2	-8.8	366.3	叠层石白云岩
LZ037	0.5	-7.0	363.7	鲕粒砂屑灰岩
LZ036	0.7	-7.6	361.6	鲕粒灰岩
LZ035	0.5	-7.9	358.4	白云质灰岩
LZ034	1.9	-3.3	352.1	白云质灰岩
LZ033	1.3	-3.9	340.8	砂屑灰岩
LZ032	0.3	-4.8	333.7	灰质白云岩
LZ031	0.2	-5.5	330.9	含鲕粒灰岩
LZ030	1.3	-8.1	329.0	鲕粒灰岩
LZ029	1.1	-8.0	319.5	鲕粒砂屑灰岩
LZ028	-0.5	-5.9	313.7	豆粒灰岩
LZ027	0.6	-8.0	313.0	砂屑灰岩
LZ026	0.3	-7.4	293.6	鲕粒灰岩
LZ025	0.1	-5.2	273.1	鲕粒灰岩
LZ024	0.3	-5.4	268.0	豆粒灰岩
LZ023	0.3	-5.1	249.3	藻灰岩
LZ022	-0.1	-8.1	246.8	鲕粒灰岩
LZ021	0.6	-4.9	241.8	竹叶状灰岩
LZ020	0.6	-5.4	230.4	砂屑颗粒灰岩
LZ019	0.9	-5.4	226.6	云斑状灰岩
LZ018	1.5	-6.7	221.8	砂屑颗粒灰岩
LZ017	1.6	-3.9	220.2	灰质白云岩
LZ016	2.7	-5.0	218.1	白云质灰岩
LZ015	2.8	-4.6	216.7	砂屑灰岩
LZ014	2.8	-5.8	215.7	豹皮灰岩
LZ013	2.2	-6.5	214.7	白云质灰岩
LZ012	3.1	-9.1	199.3	砂屑灰岩
LZ011	1.9	-9.1	189.8	细晶灰岩
LZ010	1.7	-5.4	183.1	薄板灰岩
LZ009	1.6	-5.3	181.6	薄板灰岩
LZ008	0.5	-4.6	171.7	薄层灰岩
LZ007	-0.9	-4.9	170.7	生物碎屑灰岩
LZ006	-1.7	-6.6	163.8	砂屑灰岩
LZ005	-0.1	-9.4	156.4	鲕粒灰岩
LZ004	0.3	-6.3	149.5	鲕粒灰岩
LZ003	-0.7	-7.0	125.0	鲕粒灰岩
LZ002	-0.2	-11.8	109.8	泥晶白云岩
LZ001	1.3	-6.5	97.8	鲕粒灰岩

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参考文献(53)

[1]	Sharp Z. Principles of stable isotope geochemistry: Principles of stable isotope geochemistry[M]. [S. l.]. [s. n.], 2007.
[2]	Glumac B, Spivak-Birndorf M L. Stable isotopes of carbon as an invaluable stratigraphic tool: An example from the Cambrian of the northern Appalachians, USA[J]. Geology, 2002, 30(6): 563-566. doi: 10.1130/0091-7613(2002)030<0563:SIOCAA>2.0.CO;2
[3]	Brasier M D, Anderson M M, Corfield R M. Oxygen and carbon isotope stratigraphy of Early Cambrian carbonates in southeastern Newfoundland and England[J]. Geological Magazine, 1992, 129(3): 265-279. doi: 10.1017/S001675680001921X
[4]	周鹏, 陈孝红, 危凯. 黄陵背斜东南缘埃迪卡拉系碳稳定同位素组成特征及有机质发育关系讨论[J]. 地质科技通报, 2020, 39(2): 62-73. doi: 10.19509/j.cnki.dzkq.2020.0207 Zhou P, Chen X H, Wei K. Carbon isotope characteristics and organic matter development of the Ediacaran in the southeastern margin of the Huangling anticline, western Hubei[J]. Bulletin of Geological Science and Technology, 2020, 39(2): 62-73(in Chinese with English abstract). doi: 10.19509/j.cnki.dzkq.2020.0207
[5]	Zhu M, Loren B, Peng S. Advances in Cambrian stratigraphy and paleontology: Integrating correlation techniques, paleobiology, taphonomy and paleoenvironmental reconstruction[J]. Palaeoworld, 2006, 15: 217-222. doi: 10.1016/j.palwor.2006.10.016
[6]	Saltzman M R, Thomas E. Chapter 11-carbon isotope stratigraphy[C]//Gradstein F M, Ogg J G, Schmitz M D, et al. The geologic time scale. Boston: Elsevier, 2012.
[7]	左景勋, 彭善池, 朱学剑, 等. 湘西寒武系鼓山阶底界附近碳同位素组成演化趋势[J]. 地球化学, 2018, 47(5): 453-462. doi: 10.19700/j.0379-1726.2018.05.001 Zuo J X, Peng S C, Zhu X J, et al. Carbon isotope trend around the base of the Drumian Stage in western Hunan, South China[J]. Geochimica, 2018, 47(5): 453-462(in Chinese with English abstract). doi: 10.19700/j.0379-1726.2018.05.001
[8]	朱茂炎, 杨爱华, 袁金良, 等. 中国寒武纪综合地层和时间框架[J]. 中国科学: 地球科学, 2019, 49(1): 26-65. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201901004.htm Zhu M Y, Yang A H, Yuan J L, et al. Cambrian integrative stratigraphy and timescale of China[J]. Science China: Earth Sciences, 2019, 49(1): 26-65(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201901004.htm
[9]	Wang Z, Chen J, Liang T, et al. Spatial variation in carbonate carbon isotopes during the Cambrian SPICE event across the eastern North China Platform[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2020, 546: 109669. doi: 10.1016/j.palaeo.2020.109669
[10]	仲聪聪, 王敏, 李凯楠, 等. 豫西登封地区寒武系苗岭统张夏组碳同位素组成特征及其地层学意义[J]. 河南理工大学学报: 自然科学版, 2020, 39(1): 37-46. https://www.cnki.com.cn/Article/CJFDTOTAL-JGXB202001005.htm Zhong C C, Wang M, Li K N, et al. Carbon isotope composition characteristics and its stratigraphic significance in Zhangxia Formation, Miaolingian series of Cambrian in Dengfeng, western Henan[J]. Journal of Henan Polytechnic University: National Science Edition, 2020, 39(1): 37-46(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-JGXB202001005.htm
[11]	He T, Zhu M, Mills B J W, et al. Possible links between extreme oxygen perturbations and the Cambrian radiation of animals[J]. Nature Geoscience, 2019, 12(6): 468-474. doi: 10.1038/s41561-019-0357-z
[12]	Huang J, Chen Y, Chu X, et al. The geochemistry of the late Cambrian carbonate in North China: The steptoean positive carbon isotope excursion (SPICE) record suppressed in a coastal condition?[J]. Geological Magazine, 2019, 156(10): 1805-1819. doi: 10.1017/S0016756819000025
[13]	Mackey J E, Stewart B W. Evidence of SPICE-related anoxia on the Laurentian passive margin: Paired δ¹³C and trace element chemostratigraphy of the Upper Conasauga Group, Central Appalachian Basin[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2019, 528: 160-174. doi: 10.1016/j.palaeo.2019.04.018
[14]	Li D, Zhang X, Hu D, et al. Evidence of a large δ¹³C_carb and δ¹³C_org depth gradient for deep-water anoxia during the Late Cambrian SPICE event[J]. Geology, 2018, 46(7): 631-634. doi: 10.1130/G40231.1
[15]	冯增昭, 彭勇民, 金振奎, 等. 中国晚寒武世岩相古地理[J]. 古地理学报, 2002, 4(3): 1-10. doi: 10.3969/j.issn.1671-1505.2002.03.001 Feng Z Z, Peng Y M, Jin Z K, et al. Lithofacies palaeogeography of the Late Cambrian in China[J]. Journal of Palaeogeography, 2002, 4(3): 1-10(in Chinese with English abstract). doi: 10.3969/j.issn.1671-1505.2002.03.001
[16]	史晓颖, 陈建强, 梅仕龙. 华北地台东部寒武系层序地层年代格架[J]. 地学前缘, 1997, 4(增刊2): 165-177. Shi X Y, Chen J Q, Mei S L. Cambrian sequence chronostratigraphic framework of the North China Platform[J]. Earth Science Frontiers, 1997(S2): 165-177(in Chinese with English abstract).
[17]	梅冥相, 郭荣涛, 胡媛. 北京西郊下苇甸剖面寒武系崮山组叠层石生物丘的沉积组构[J]. 岩石学报, 2011, 27(8): 2473-2486. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201108023.htm Mei M X, Guo R T, Hu Y. Sedimentary fabrics for the stromatolitic bioherm of the Cambrian Gushan Formation at the Xiaweidian section in the western suburb of Beijing[J]. Acta Petrologica Sinica, 2011, 27(8): 2473 -2486(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201108023.htm
[18]	Zhang W T, Xiang L W, Liu Y H, et al. Cambrian stratigraphy and trilobites from Henan[J]. Palaeontologia Cathayana, 1995, 6: 1-166.
[19]	彭善池. 华南斜坡相寒武纪三叶虫动物群研究回顾并论我国南、北方寒武系的对比[J]. 古生物学报, 2009, 48(3): 437-452. doi: 10.3969/j.issn.0001-6616.2009.03.015 Peng S C. Review on the studies of Cambrian trilobite faunas from Jiangnan slope belt, South China, with notes on Cambrian correlation between South and North China[J]. Acta Palaeontologica Sinica, 2009, 48(3): 437-452(in Chinese with English abstract). doi: 10.3969/j.issn.0001-6616.2009.03.015
[20]	袁金良. 山东及邻区张夏组(寒武系第三统)三叶虫动物群[M]. 北京: 科学出版社, 2012. Yuan J L. The trilobite fauna of the Zhangxia Formation (Third Cambrian) in Shandong and neighboring areas[M]. Beijing: Science Press, 2012(in Chinese).
[21]	Shen Y, Schidlowski M. New C isotope stratigraphy from Southwest China: Implications for the placement of the Precambrian-Cambrian boundary on the Yangtze Platform and global correlations: Reply[J]. Geology, 2001, 28: 623-626.
[22]	张钰莹, 江大勇, 何治亮, 等. 安徽巢湖下三叠统含巢湖龙动物群地层碳氧同位素特征及意义[J]. 地质科技情报, 2017, 36(1): 72-76. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201701010.htm Zhang Y Y, Jiang D Y, He Z L, et al. Carbon and oxygen isotopes characteristics of the strata containing Chaohusaurus Fauna in Lower Triassic in Chaohu area, Anhui Province and its palaeoenvirenmental significance[J]. Geological Science and Technology Information, 2017, 36(1): 72-76(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201701010.htm
[23]	贾鹏, 李明, 卢远征, 等. 四川盆地寒武系洗象池群层序地层划分及层序地层格架的建立[J]. 地质科技情报, 2017, 36(2): 119-127. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201702015.htm Jia P, Li M, Lu Y Z, et al. Sequence sratigraphic subdivision and establishment of sequence stratigraphic framework in the Cambrian Xixiangchi Group of Sichuan Basin[J]. Geological Science and Technology Information, 2017, 36(2): 119-127(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201702015.htm
[24]	Li D, Ling H F, Jiang S Y, et al. New carbon isotope stratigraphy of the Ediacaran-Cambrian boundary interval from SW China: Implications for global correlation[J]. Geological Magazine, 2009, 146(4): 465-484. doi: 10.1017/S0016756809006268
[25]	Wotte T, Alvaro J, Shields G, et al. High resolution C-, O- and Sr-isotope stratigraphy across the Lower-Middle Cambrian transition of the Cantabrian Mountains (Spain) and the Montagne Noire (France), western Gondwana[C]//Anon. Information resources management association international conference on challenges of information technology management in Century. [S. l.]. [s. n.], 2007.
[26]	Kaufman A J, Knoll A H. Neoproterozoic variations in the C-isotopic composition of seawater: Stratigraphic and biogeochemical implications[J]. Precambrian Research, 1995, 73(1/4): 27-49.
[27]	樊茹, 邓胜徽, 张学磊. 碳酸盐岩碳同位素地层学研究中数据的有效性[J]. 地层学杂志, 2010, 34(4): 445-451. https://www.cnki.com.cn/Article/CJFDTOTAL-DCXZ201004018.htm Fan R, Deng S H, Zhang X L. The data validity evluation of carbonate δ¹³C in C isotope stratigraphy[J]. Journal of Stratigraphy, 2010, 34(4): 445-451(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-DCXZ201004018.htm
[28]	左景勋, 彭善池, 朱学剑. 扬子地台寒武系碳酸盐岩的碳同位素组成及地质意义[J]. 地球化学, 2008, 37(2): 118-128. doi: 10.3321/j.issn:0379-1726.2008.02.003 Zuo J X, Peng S C, Zhu X J. Carbon isotope composition of Cambrian carbonate rocks in Yangtze Platform, South China and its geological implications[J]. Geochimica, 2008, 37(2): 118-128(in Chinese with English abstract). doi: 10.3321/j.issn:0379-1726.2008.02.003
[29]	Kouchinsky A, Bengtson S, Gallet Y, et al. The SPICE carbon isotope excursion in Siberia: A combined study of the upper Middle Cambrian-lowermost Ordovician Kulyumbe River section, northwestern Siberian Platform[J]. Geol. Mag., 2008, 145: 609-622. doi: 10.1017/S0016756808004913
[30]	Brasier M D. Towards a carbon isotope stratigraphy of the Cambrian System: Potential of the Great Basin succession[J]. Geological Society London Special Publications, 1993, 70(1): 341-350. doi: 10.1144/GSL.SP.1993.070.01.22
[31]	Zuo J X, Peng S C, Qi Y P, et al. Carbon-isotope excursions recorded in the Cambrian System, South China: Implications for mass extinctions and sea-level fluctuations[J]. Journal of Earth Science, 2018, 29(3): 479-491. doi: 10.1007/s12583-017-0963-x
[32]	Babcock L E, Rees M N, Robison R A, et al. Potential global standard stratotype-section and point (GSSP) for a Cambrian stage boundary defined by the first appearance of the trilobite Ptychagnostus atavus, Drum Mountains, Utah, USA[J]. Geobios, 2004, 37(2): 149-158. doi: 10.1016/j.geobios.2003.03.007
[33]	Loren B, Robison R, Rees M, et al. The global boundary stratotype section and point (GSSP) of the Drumian Stage (Cambrian) in the Drum Mountains, Utah, USA[J]. Episodes, 2007, 30: 85-95. doi: 10.18814/epiiugs/2007/v30i2/003
[34]	彭善池. 华南新的寒武纪生物地层序列和年代地层系统[J]. 科学通报, 2009, 54(18): 2691-2698. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200918010.htm Peng S C. The newly-developed Cambrian biostratigraphic succession and chronostratigraphic scheme for South China[J]. Chinese Sci. Bull., 2009, 54(18): 2691-2698(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200918010.htm
[35]	易雨昊, 李先昀, 冯庆来. 滇东北会泽蜂子箐剖面寒武系纽芬兰统生物地层学和年代地层学[J]. 地质科技情报, 2019, 38(5): 121-131. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201905012.htm Yi Y H, Li X Y, Feng Q L. Biostratigraphy and chronostratigraphy of the Cambrian Terreneuvian from the Fengziqing Section in Huize area, Northeast Yunnan[J]. Geological Science and Technology Information, 2019, 38(5): 121-131(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201905012.htm
[36]	危凯, 陈孝红, 王传尚, 等. 湘鄂西地区晚埃迪卡拉世-早寒武世硅质岩成因及其页岩气地质意义[J]. 地质科技通报, 2020, 39(2): 20-30. doi: 10.19509/j.cnki.dzkq.2020.0203 Wei K, Chen X H, Wang C S, et al. Origin of siliceous rocks in west Hunan and Hubei provinces during Late Ediacaran-Early Cambrian, and its geological significance of shale gas[J]. Bullietin of Geological Science and Technology, 2020, 39(2): 20-30(in Chinese with English abstract). doi: 10.19509/j.cnki.dzkq.2020.0203
[37]	Sun X. Cambrian agnostids from the North China Platform[J]. Palaeontologia Cathayana, 1989(4): 53-130.
[38]	裴放. 河南省华北型寒武纪生物地层单位划分与对比[J]. 河南地质, 2000, 18(2): 97-106. https://www.cnki.com.cn/Article/CJFDTOTAL-HNDD200002004.htm Pei F. Division and correlation of the North China type Cambrian biostratigraphic units of Henan Province[J]. Henan Geology, 2000, 18(2): 97-106(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-HNDD200002004.htm
[39]	Howley R A, Jiang G. The Cambrian Drumian carbon isotope excursion (DICE) in the Great Basin, western United States[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2010, 296(1/2): 138-150.
[40]	Montaez T P, Osleger D A, Banner J L, et al. Evolution of the Sr and C isotope composition of Cambrian Oceans[J]. Gsa Today, 2000, 10(5): 1-5.
[41]	Zhu Y M, Zhang J M, Li G X, et al. Evolution of C isotopes in the Cambrian of China: Implications for Cambrian subdivision and trilobite mass extinctions[J]. Geobios., 2004, 37(2): 287-310.
[42]	左景勋, 彭善池, 周传明, 等. 湘西王村剖面寒武系花桥组浊积岩特征及其大地构造意义[J]. 沉积学报, 2006, 24(2): 175-184. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200602002.htm Zuo J X, Peng S C, Zhou C M, et al. Tectonic significance and sedimentary characteristics of turbidity successions within the Cambrian Huaqiao Formation at Wangcun section in the West Hunan, South China[J]. Acta Sedimentologica Sinica, 2006, 24(2): 175-184(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200602002.htm
[43]	Pagès A, Schmid S. Euxinia linked to the Cambrian Drumian carbon isotope excursion (DICE) in Australia: Geochemical and chemostratigraphic evidence[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2016, 461: 65-76.
[44]	Sukhov M D B S. The falling amplitude of carbon isotopic oscillations through the Lower to Middle Cambrian: Northern Siberia data[J]. Canadian Journal of Earth Sciences, 1998, 35(35): 353-373.
[45]	左景勋, 朱学剑, 方怀宾, 等. 华北寒武系芙蓉统底界附近的碳同位素组成演化特征[J]. 地球科学, 2020, 45(3): 728-738. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX202003002.htm Zuo J X, Zhu X J, Fang H B, et al. Carbon isotope trend across the base of the Furongian Series of the Cambrian System, northern Henan, southern North China[J]. Earth Science, 2020, 45(3): 728-738(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX202003002.htm
[46]	裴放, 王建平, 王世炎, 等. 河南省中寒武世岩相古地理[J]. 古地理学报, 2012, 14: 423-436. https://www.cnki.com.cn/Article/CJFDTOTAL-GDLX201204006.htm Pei F, Wang J P, Wang S Y, et al. The Middle Cambrian lithofacies palaogeography in Henan Province[J]. Journal of Palaeogeography, 2012, 14: 423-436(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-GDLX201204006.htm
[47]	Wilson J L. Carbonate facies in geologic history: Sedimentary geology[M]. New York: Springer Verlag, 1975.
[48]	Schlager W. Carbonate sedimentology and sequence stratigraphy: SEPM concepts in sedimentology and paleontology Series no. 8. [M]. Tulsa: Society for Sedimentary Geology, 2005.
[49]	Torsvik T H, Cocks L. Earth history and palaeogeography[M]. Cambridge: Cambridge University Press, 2016.
[50]	王玉洁, 王敏. 豫西登封地区寒武系苗岭统张夏组中部生物扰动构造及地质意义[J]. 吉林大学学报: 地球科学版, 2021, 51(4): 1-13. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ202104005.htm Wang Y J, Wang M. The bioturbation structure and their geological implications from Zhangxia Formation (Cambrian Miaolingian) in Dengfeng area, western Henan[J]. Journal of Jilin University: Earth Science Edition, 2021, 51(3): 1-13(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ202104005.htm
[51]	肖飞, 汪建国, 吴和源, 等. 华北地区中北部寒武系层序地层格架[J]. 石油学报, 2017, 38(10): 1144-1157, 1167. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201710005.htm Xiao F, Wang J G, Wu H Y, et al. Cambrian sequence stratigraphic framework in the middlee-northern North China[J]. Acta Petrolei Sinica, 2017, 38(10): 1144-1157, 1167(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201710005.htm
[52]	梅幂相, 马永生. 华北寒武系层序地层格架及碳酸盐台地演化[J]. 现代地质, 1997, 11(3): 275-282. https://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ703.003.htm Mei M X, Ma Y S. Framwork of Cambrian sedimentary sequence and evolution of carbonate platform in North China[J]. Geoscience, 1997, 11(3): 275-282(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ703.003.htm
[53]	郭芪恒, 金振奎, 史书婷, 等. 鲕粒粒度特征及其指示意义: 以北京西山下苇甸寒武系张夏组剖面为例[J]. 沉积学报, 2020, 38(4): 737-746. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB202004004.htm Guo Q H, Jin Z K, Shi S T, et al. Characteristics of ooid size and its environmental significance: A case study from the Cambrian Zhangxia Formation at Xiaweidian outcrop, Beijing[J]. Acta Sedimentologica Sinica, 2020, 38(4): 737-746(in Chinese with English abstract). https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB202004004.htm